Emerald Login
   

Welcome guest

Article Request:
A MODEL OF KNOWLEDGE BASED INFORMATION RETRIEVAL WITH HIERARCHICAL CONCEPT GRAPH

Article Information:

Title:

A MODEL OF KNOWLEDGE BASED INFORMATION RETRIEVAL WITH HIERARCHICAL CONCEPT GRAPH

Author(s):

YOUNG WHAN KIM, JIN H. KIM

Journal:

Journal of Documentation

Year:

1990

Volume:

46

Issue:

2

Page:

113 - 136


ISSN:

0022-0418


DOI:

10.1108/eb026857

Publisher:

MCB UP Ltd

Document Access:

Existing customers:

Please login above.

Purchase this document:
Price payable: GBP £13.00
plus handling charge of GBP £1.50 and VAT where applicable.
Purchase

Request this document:
Print or e-mail a document request to your librarian.
Request

Reprints & permissions:
Image: Rightslink Request

Abstract:

This paper discusses a knowledge based information retrieval model with hierarchical thesaurus. The model computes the conceptual distance between a query and an object and both are indexed with weighted terms from a hierarchical thesaurus. The hierarchical thesaurus is represented by a hierarchical-concept graph (HCG) in which nodes represent concepts and directed edges represent generalisation relationships. Rada et al. have developed a similar model. However, their model considered only a binary indexing scheme and revealed some counter-intuitive results. Our proposed model extends theirs by allowing the index term and the edge of the HCG to be weighted. A new concept mapping method is devised to overcome Rada's counter-intuitive results. In addition, a scheme for allowing Boolean operators in user queries is provided with a formula for computing conceptual distance from negated index terms. Experimental results have shown that our model simulates human performance more closely than Rada's model.

Keywords:


Article Type:

General review


Article URL:

http://www.emeraldinsight.com/10.1108/eb026857

Articles that form part of the Emerald Backfiles have been created through digital scanning. Whilst all efforts have been made to ensure accuracy, Emerald will not be held responsible for any inaccuracies. If you require further clarification please contact backfiles@emeraldinsight.com.

Top